package com.itheima.reggie.service.Impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.common.CustomException;
import com.itheima.reggie.entity.Category;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.Setmeal;
import com.itheima.reggie.mapper.CategoryMapper;
import com.itheima.reggie.service.CategoryService;
import com.itheima.reggie.service.DishService;
import com.itheima.reggie.service.SetmealService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class CategoryServiceImpl extends ServiceImpl<CategoryMapper,Category> implements CategoryService{
    @Autowired
    private DishService dishService;
    @Autowired
    private SetmealService setmealService;
    @Override
    public void deleteById(Long id) {
        LambdaQueryWrapper<Dish>dishLambdaQueryWrapper=new LambdaQueryWrapper<>();
        dishLambdaQueryWrapper.eq(Dish::getCategoryId,id);
        int dishCount = dishService.count(dishLambdaQueryWrapper);
        if(dishCount>0){
            throw new CustomException("关联了菜品不能删除");
        }
        LambdaQueryWrapper<Setmeal>setmealLambdaQueryWrapper=new LambdaQueryWrapper<>();
        setmealLambdaQueryWrapper.eq(Setmeal::getCategoryId,id);
        int setmealCount = setmealService.count(setmealLambdaQueryWrapper);
        if(setmealCount>0){
            throw new CustomException("关联了套餐不能删除");
        }
        this.removeById(id);
    }
}